Outlet Box, Pre-Galvanized, Silver, 30.3 Cu.In Capacity, Square, Knockout Cable Entry, 1/2 In (Side);1/2 In (End);3/4 In (Bottom);1/2 In (Bottom) Knockout Size, 13 Knockouts, Wall or Ceiling Mount, 1 Outlet, 4 In Length, 4 In Width, 2-1/8 In Height, 87.5 LB/100